Ohio State football has four games left, and Ryan Day must address offensive line struggles, red-zone execution, and coaching accountability. The Buckeyes have four games to determine their postseason destination after falling to 6-4 in their last ten games. Ryan Day’s decisions now will determine whether Ohio State can correct its shortcomings and compete to achieve its goals. Ohio State is 6-2 following Saturday’s 30-18 loss to USC, and the…